Brake.



No. $111,694'I PATENTED JAN. 22, 1907. VAN BURBN LAMB, BRAKE.

APPLICATION FILED MAYZG, 1906.

2 SHEETS-SHEET l.

WITNESSES.'

' [NVE/1T l? t l v ATTORNEYS. I

PATENTED JAN. 22, 19o?.

VAN BUREN LAMB.

BRAKE.

APPLICATION FILED nu 2s. 190s.

2 SHEETS-SHEET 2.

V /Nl/ENT A TTR/VEYS.

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UNITED STATES PATENT 'oEEicE VAN BUREN LAMB, OF NEW HAVEN, CONNECTICUT,ASISIGNOR TO KEYSTONE BRAKE-SHOE COMPANY, NEW YORK, N. Y., A

BRAKE.

Specification of Letters Patent.

Patented Jan. 22, 1907.

Application filed May 26,1906. Serial No. 318,809.

To all!) whom it may concern:

Be it known that L'VxN BUREN LAMB, residing at New Haven, in the countyof New Haven and State of Connecticut, have invented certain new anduseful Improveu ments in Brakes, of which the following is anddurability of construction.

Another object is to provide means of the` above type in which the metalis economically consumed.

Another object is to provide means of the y above type in which thecomponent members jas are readily taken apart and reassembled.

Other objects will be'iii part obvious and in part pointed outhereinafter.

The invention' accordingly consists in the features of construction,combinations of elements, and arrangement of parts which will beexemplified in the embodiment thereof hereinafter described and thescope of the application of which will be indicated'in thev followingclaims.

In the accompanying drawings, wherein is shown one of the variouspossible embodiments of this invention, Figure 1 is a side elevationthereof. Fig. 2 is a rear view of parts shown in Fig. 1. Fig. 3 is aperspective view of a portion of a head. Fig. 4 is a similar view ofanother portion of a head.

Similar reference characters refer to similar parts throughout theseveral views of the drawings.

Referring now to Fig. 1 of thel drawings, there is shown a brake-head 1,comprising the main and auxiliary portions 2 and 3, respectively formingthe subject-matter of Figs. 3 and 4 of the drawings.

Portion 2 comprises a body portion having formed thereon the means 4whereby the head is mounted upon the brake-beam or other supportingmember. Portion 2 is provided with a side flange or web 5 upon one sideof the head and upon the other side with a short flange or abutment 6,the function of which will be hereinafter described. Extending laterallyfrom portion 2 isaprojection 7 of tapering form and provided with akeyway 8., and likewise extending in a general lateral direction fromthis portion of the head are the end shoulders 9, re-

cessed as shown at 10.

The'auxiliary or 4complementary portion 3 of the head (shown in Fig. 4of the drawings) is provided with a side web \11, adapted to iit beneaththe abutment 6 upon portion2 and rest within the recesses 10. Thepositioning of the parts in this relation is brought about by thrustingthe portion 3 toward the portion 2, the projection 7 passing through asuitable recess or mortise 12 formed in the former portion.

Portions 2 and 3 are collectively provided with a recess 13, havingundercut walls oonverging toward each end of the head and of decreasingdepth in these directions, as is best shown in Fig. 1 of the drawings.

The shoes 14 used with the above head are preferably dividedtransversely into two portions 15 and 16 and are provided upon theirrear surfaces with tenons adapted, with the parts in assembled relation,to fit closely the recess or mortise 13, formed within the forward faceof the head, as above described. Each shoe is, moreover, provided uponit forward face or the face toward the wheel with a niortise Whichis thecounterpart of the tenon immediately above mentioned and receivestherein the similar tenen-upon another shoe member 17, transverselydivided at a point offset with respect to the point of division of theshoe first mentioned.

The method of use of the above-described embodiment of this invention issubstantially as follows: Assuming the parts to be in the conditionshown in Fig. 1 of the drawings and assuming that the wear upon thedouble shoehas extended to a point within the `shoe member 14, such wearbeing permitted without dropping of the parts by reason of thedovetalled conformation of the joint between the shoe members', theportions of the head are laterally separated, as by withdrawing thespringkey 1S, which normally holds these parts snugly together, andremoving the portions of the worn shoe. These portions are then fittedwithin the portions of a new shoe identical with that removed in itsoriginal form, and the tenon upon the rear surface of the new shoe isfitted within the head and the parts reassembled portion adjacent eachend thereof, one of the vrear surface with a similar projecting portion,

in a manner which will be clear fromv the drawings, taken in connectionwith the above description.

It will thus be seen that there is provided a simple construction inwhich the several objects of this invention are attained. The v metal ofeach shoe is entirely consumed, quite doing away with the scrapping ofparts or the dropping of the same upon the road-bed, and yet all `partsof-the brakingdevice are rigidly held 1n assembled conditlon. Thestrength of this assemblage of parts will be obvious from aconsideration of their interiitting nature, whereby dependence uponretaining devices is substantially done away with. The parts, moreover,are readily taken apart by the removal of the key 18 and may be quicklyreassembled, all without the use of special tools.

As many changes could be made in the above construction and manyapparently widely different embodiments of this invention could be madewithout. departing from the scope thereof, it is intended that allmatter contained in the above description or shown in the accompanyingdrawings shall be interpreted as illustrative and not in a limitingsense. It is also to be understood that the langua e used in thefollowing claims is intende to cover all of the generic and specificfeatures of the invention herein described and all statements of thescope of the invention which as a matter of language might be said tofall therebetween. Y

Having described my invention, what I claim as new, and desire to secureby Letters. A Patent, is-

l. In construction of the class described, in combination, a brake-shoehaving upon its rear surface a projecting portion the lateral walls ofwhich are undercut, a second brake-shoe fitted about said projectingportion and provided upon its rear surface with a similar projectingportion, a brake-head` comprising two laterally-separable portions eachof which is adapted to fit one of the lateral walls of saidlast-mentioned projecting portions of said brake-head being providedwith a projection extending through the other portion of said head, andmeans adaptl ed to hold the portions of said head in assembled relation.

2. In construction of the class described, in combination, a ,brake-shoehaving upon its rear surface a projecting portion of decreasingthickness toward the ends of the shoe and the lateral walls of -whichare undercut, a second brake-shoe fitted about said projecting portionand provided upon its a. brake-head comprising two laterally-separableportions each of which is adapted to fit one of the lateral walls ofsaid last-mentioned projecting portion adjacent each end l thereof, oneof the portions of said brakehead being provided with a projectionextending through the other portion of said head, and means adapted tohold the portions of said head in assembled relation.

3. In lconstruction of the class described, in combination, a brake-shoehaving upon its' rear surface a projecting portion the lateral walls ofwhich are undercut and converge toward the ends of the shoe, a secondbrakeshoe fitted about said projecting portion and provided upon itsrear surface with a similar projecting portion, a brake-head comprisingtwo laterally separable portions each of which is adapted to fit one ofthe lateral walls of said last-mentioned projecting portion ad'- jacenteach end thereof, one of the portions" of said brake-head being providedwith a projection extending through the other portion of said head, andmeans adapted to hold the portions of said head in assembled rel-ation.

4. In construction of the class described, in combination, a brake-shoeprovided upon its rear surface with a projecting portion the lateralwalls of which are undercut and converge toward each end of theshoe, abrake-. l

head comprising two laterally-separable por-" tions each of which isadapted to fit one of the lateral Awalls of said projecting portionadjacent each end thereof, one ortion of said brake-head being providedwith a projection passing through the othenportion thereof,

and means adaptedto hold theportions of said head in assembledcondition. l

5. In construction of the class described, in combination, a brake-shoeprovided upon IOC its rear surface with a projecting portion 'ofdecreasing thickness toward the ends of. the shoe and the lateral wallsof which are undercut and converge toward each end of the shoe, abrake-head comprising two laterallyseparable portions each of which isadapted to fit one of the lateral walls of said projecting portionadjacent each end thereof, one portion of said brake-head being providedIXO with a projection passing through the other I portion thereof, andmeans adapted to hold the portions of said head in assembled condition.

6. In construction of the class described, in combination, a brake-shoeprovided upon its rear surface with a projecting portion of decreasingthickness toward the ends of the shoe and the lateral walls of which areundercut, a brake-head comprising two laterallyseparable portionsrespectively fitting said lateral walls adjacent each end thereof, one

of said portions Vof saidhead being provided with aprojection extendingthrough the other portion of said head, and means holding the portionsof said head in assembled condition.

7. In construction of the class described, in combination, a brake-shoehaving upon its rear surface a proj ecting, portion the lateral walls:of which are undercut, a second brakeshoe fitted about said projectingportion and Aprovided with a similar projecting portion upon its rearsurface, a brake-head comprising tWo'laterally-separable portions eachof which is adapted to fit one of the'undercut surfaces adjacent eachend thereof, one of the A ortions of said. head being provided withaterally-extended ends between which the other portion of said head isfitted, and .means adapted to hold the portions of said `head inassembled condition.

v8. In construction of the class described,v

.in combination, a brake-shoe having upon its .rear surface a projectingportion the lateral walls of which are undercut and converge towardVeach end of the shoe, a second brake- 4shoe fitted about saidprojecting portion and -p'rovided with a similar projecting portionupon'its rear surface, a brake-head comprising-two laterally-separableportions each of -Which is adapted to fit one of said undercut Ysurfacesadjacent each end thereof, one of the portions of said head beingprovided with llaterally-extended, ends between which the .other portionof said head is fitted, and

-means .adapted to hold the portions of said -head in assembledcondition.

lateral walls of which are undercut and convergel toward each end of theshoe, a brake head comprising two laterally-separable portions adaptedrespectively to fit said undercut surfaces adjacent each end thereof,one portion of said head being provided with lateru ally-extending endsand a-laterally-extend- -.,lat'eral.walls of which are undercut, abrake-- -ing central portion, and the other portion of said head beingadapted to fit between said ends and under said central portion, and

means adapted to hold the portions of said head in assembled condition.

10. In'construction of the class described,

Tin combination, a brake-shoe provided upon its rear surface with aprojecting portion the head comprising two laterally-separable portionsadapted respectively to fit said under- 'cutwalls adjacenteach endthereof7 one of said portions of said head being provided with aprojection extending through the other portion thereof, 'and meansadapted to hold the portions of said head in assembled condition.

11. In construction of the class described,

`in combination, a brake-shoe provided upon its rear surface with aprojecting portion the lateral walls of which are undercut, a brakeheadcomprising a pair of laterally-separable portions adapted respectivelyto fit said undercut walls adjacent each end thereof, one of theportions of said head being provided with laterally-extended endsbetween which the other portioii'is adapted to fit, and means adapted tohold the porticns of said head in assembled condition.

l2. In construction of the class described, in combination, abrake-shoeprovided upon its rear surface With-a projecting portion the lateralwalls of which are undercut, a brakehead comprising twolaterally-separable portions each of which is adapted to fit one of saidundercut surfaces adjacent each end thereof, one portion'of said headbeing provided With,laterally-extended ends and a laterally extendedcentral portion, and the other portion of said head being adapted to fitbetween said ends and under said central portion, and means adapted tohold the portions of said head inassemblcd condition.

13. In construction of the class described, in combination, a brake-shoeprovided upon its rear surface with a projecting portion the lateralwalls of which are undercut, a brakehead comprising twolaterally-separable portions adapted respectively to fit said undercutwalls adjacent each end thereof, one of said portions of said head beingprovided with a projection extending through the other portion thereof,and a key passing through said projection and 'adapted to hold theportions of said head in assembled condition.

14. In construction of the class described, in combination, a brake-shoeprovided upon its rear surface with a projecting portion the lateralWalls of which are undercut, a brakehead comprising twolaterally-separable portions adapted respectively to fit said 'under-`cut walls adjacent each end thereof, one of said portions of said headbeing provided with a. projection extending through the other portionthereof, and a spring-key passing through said projection and spacedfrom said head and resting against the lateral surfaces thereof adaptedto hold the portions in assembled condition.

15. In construction of the class described,

in combination, a brake-slice having upon its rear surface a projectingportion the lateral walls of which are undercut, a second brakeshoefitted about said projecting portion and provided upon its rear surfacewith a similar projecting portion, a brake-head comprising two laterallyseparable portions each of which is adapted to fit one of the lateralwalls of said last-mentioned projecting portion adjacent each endthereof, one of the portions of said brake-head being provided with aprojection extending through the other portion of said head and oneportion of said head being provided with laterally-extended ends betweenwhich the other portion is adapted to fit, and means adapted to hold theportions of said head in assembled condition.

16. In construction of the class described, in combination, a brake-shoeprovided upon its rear surface with a projecting portion the lOS lateralwalls of which are undercut and con-` verge toward each end ofthe shoe,a brakehead comprising two laterally-separable portions each of which isadapted to fit one of the lateral walls of said projecting portionadjacent each end thereof, one portion of said brake-head being providedwith a projection passing through the other portion thereof and oneportion of said head being provided with laterally-extended ends betweenwhich the other portion is adapted to fit, and means adapted to hold theportions of said head in assembled condition.

17. In construction of the class described, in combination, a brake-shoeprovided upon its rear surface with a projecting portion of decreasingthickness toward the ends of the shoe andthe lateral walls of which areundercut and converge toward each end of the shoe, a brake-headcomprising two laterallyseparable portions each of which is adapted tofit one of the lateral walls of said projecting portion' adjacent eachend thereof, one

portion of said brake-headbeing providedl with ya projection passingthrough the other portion thereof and one portion of said head beingprovided with laterally-extended ends between which the other portion isadapted to fit, and means adapted to hold the portions of said head inassembled condition.

18. In construction of the class described,

in combination, a brake-shoe having upon its rear surface a projectingportion the lateral walls of which are undercut, a second brake-shoefitted about said projecting portion and provided upon its rear surfacewith a similar projecting portion, a brake-head comprising twolaterally-separable portions each of which is adapted to fit one of thelateral walls of said last-mentioned projecting ortion adjacent each endthereof, one ofthe i portions of said brake-head being provided with aprojection extending through the other portion ofsaid head and oneportion of said head being provided with laterally-extended ends and alaterally-extended central portion, the remaining portion of said headbeing adapted to it between said ends and under said central portion,and means adapted to hold the portions of said head in assembledcondition. v

19. In construction of the class described, in combination, a brake-shoehaving upon itsrear surface a projecting portion the lateral walls ofwhich are undercut, a second brake-shoe fitted about said projectingportion and provided upon its rear surface with a siinilar projectingportion, a brake-head comprising two laterally-separable portions eachof which is adapted to fit one of the lateral walls of'saidlast-mentioned projecting portion adjacent each `end thereof, one of theportions of said brake-head being provided with a projection eXtendinother portion of said head an one portion of said head being providedwith laterally-extended ends and alaterally-extended central under saidcentral portion, ,and a key passing through said projection adapted tohold the portions of said head in assembled condition.

20. In construction of the class described,l in combination, abrake-shoe having upon its rear surface a projecting portion the lateralwalls of which are undercut, a second brake-shoe fitted about saidprojecting portion and provided upon its rear surface with through theportion, the remaining portion of said head being adapted to fit betweensaid ends and a similar projecting portion, each of said i shoes beingtransversely divided into two parts, a brake-head comprising`two'laterally-seiarable portions each of which is ada-ptj -A tion andpro' ided upon its rear surface with a similar projecting portion, eachof said shoes being transversely divided into two parts on lines offsetwith respect one to another, a brake-head comprisingtwolaterallyseparable portions each of which is ada ted to t one of thelateral-walls of said' astmentioned projecting portion adjacent each endthereof, one of the portions of said brakehead being provided with aprojection eX- tending through the other portion of said head, and meansadapted to hold the portions of said -head in assembled relation.

In testimony whereof I affix my signature in the presence of twowitnesses.

VAN BUREN LAMB.

Witnesses:

R. S. BLAIR, A. G. PREVIN.

